A missile defense battery, capable of shooting down short- and intermediate-range missiles, is being deployed to Guam, a U.S. territory in the Pacific and home to a military base. It’s the latest move by U.S. officials closely monitoring increasingly heated rhetoric from North Korea.

(Secy Hagel) “It only takes being wrong once, and I don’t want to be the Secretary of Defense who is wrong once.”

Defense Secretary Chuck Hagel, delivering a policy address in D.C., calling North Korea a real and clear danger, adding the U.S. is working with China and others in hopes of ratcheting down tensions.